VEGA FIELDBARRIER - Manual (Page 13)

FieldBarrier
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
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08/
2007 122329
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equalization (capacitive grounding of the shield of the trunk). This capacitor can be
bypassed with terminals 1B and 2B (hard grounding of the shield of the trunk).
If the shield of the EEx e fieldbus transmission line is grounded for reasons related to
EMC, Section 12.2.2.3 of EN 60079-14 and Section 3.3.3 of the PNO introductory
manual PROFIBUS PA or Sections 4.1 and 4.4 of the FOUNDATION Fieldbus Appli-
cation Guides must always be observed.
Each shield connection of intrinsically safe fieldbus segments (12S, 15S, 18S, 21S)
is connected internally through a capacitor of less than 12 nF with the potential equal-
ization (capacitive grounding of the shield of the fieldbus transmission line). The cable
that is used must be designed for an insulation voltage of at least 500 V between the
bus transmission line and the shield.
A hard grounding of the shielding of the intrinsically safe trunk can be implemented
with FieldBarriers of types F*D0-FB-Ex4.CGB, F*D0-FB-Ex4.CGS and F*D0-FB-
Ex4.CGAB.
4.7 Repair and maintenance
The transmission behavior of the FieldBarrier is stable even over long periods of time.
There is thus no need for regular adjustments or similar tasks. Maintenance is there-
fore not required.
4.8 Fault elimination
FieldBarriers that are operated in connection with hazardous areas must not be mod-
ified. If there is a defect, the FieldBarrier must always be replaced.
Defective housing parts (for example cover seals) must be replaced only by original
parts. Tasks for eliminating malfunctions must only be performed by specialists who
are specially trained and authorized for the task.
4.9 Disposal
Disposal of the packaging and FieldBarrier must only take place in accordance with
the requirements of the country in which the FieldBarrier is installed.
The FieldBarrier does not contain any batteries that must be disposed of separately
from the FieldBarrier.